Martin Opitz is a central figure of German literary history who introduced many genres of Renaissance literature into Germany and established rules and patterns for literary developments up to the 18th century.

Based on the library's holdings and a repertory already completed in a former project at the Herzog August Bibliothek, the correspondence of Martin Opitz have been edited, annotated and translated. These texts will be supplemented by a collection of manuscript entries by the poet, a selection of literary and pictorial testimonies, and an appendix of biographical documents written by other authors.